x=int(input())
if x>=400 and x<=599:
    print(8)
    exit()
if x>=600 and x<=799:
    print(7)
    exit()
if x>=800 and x<=999:
    print(6)
    exit()
if x>=1000 and x<=1199:
    print(5)
    exit()
if x>=1200 and x<=1399:
    print(4)
    exit()
if x>=1400 and x<=1599:
    print(3)
    exit()
if x>=1600 and x<=1799:
    print(2)
    exit()
if x>=1800 and x<=1999:
    print(1)
    exit() x=int(input()) x int(input()) int input() input if x>=400 and x<=599:
    print(8)
    exit() x>=400 and x<=599 x>=400 x 400 x<=599 x 599 print(8) print 8 exit() exit if x>=600 and x<=799:
    print(7)
    exit() x>=600 and x<=799 x>=600 x 600 x<=799 x 799 print(7) print 7 exit() exit if x>=800 and x<=999:
    print(6)
    exit() x>=800 and x<=999 x>=800 x 800 x<=999 x 999 print(6) print 6 exit() exit if x>=1000 and x<=1199:
    print(5)
    exit() x>=1000 and x<=1199 x>=1000 x 1000 x<=1199 x 1199 print(5) print 5 exit() exit if x>=1200 and x<=1399:
    print(4)
    exit() x>=1200 and x<=1399 x>=1200 x 1200 x<=1399 x 1399 print(4) print 4 exit() exit if x>=1400 and x<=1599:
    print(3)
    exit() x>=1400 and x<=1599 x>=1400 x 1400 x<=1599 x 1599 print(3) print 3 exit() exit if x>=1600 and x<=1799:
    print(2)
    exit() x>=1600 and x<=1799 x>=1600 x 1600 x<=1799 x 1799 print(2) print 2 exit() exit if x>=1800 and x<=1999:
    print(1)
    exit() x>=1800 and x<=1999 x>=1800 x 1800 x<=1999 x 1999 print(1) print 1 exit() exit x=int(input()) int(input()) x
x=int(input())
if x>=400 and x<=599:
    print(8)
    exit()
if x>=600 and x<=799:
    print(7)
    exit()
if x>=800 and x<=999:
    print(6)
    exit()
if x>=1000 and x<=1199:
    print(5)
    exit()
if x>=1200 and x<=1399:
    print(4)
    exit()
if x>=1400 and x<=1599:
    print(3)
    exit()
if x>=1600 and x<=1799:
    print(2)
    exit()
if x>=1800 and x<=1999:
    print(1)
    exit()
